Fix casts in evp.c and build issue in ParseCRL

[embhorn]

Description

In evp.c, replace casts touint32_t with word32 Fix build error with ./configure --enable-crl --enable-asn=template

Testing

Clean build

Checklist

• [ ] added tests
• [ ] updated/added doxygen
• [ ] updated appropriate READMEs
• [ ] Updated manual and documentation